| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 16 |
4.3%
|
| 1 | Never | 14 |
3.7%
|
| 2 | Once a week | 101 |
26.9%
|
| 3 | Between 2 and 4 times a week | 88 |
23.5%
|
| 4 | Daily | 137 |
36.5%
|
| 5 | More than once a day | 19 |
5.1%
|
| Sysmiss | 1071 |